The Village of Sheffield was founded on the Lake Erie plain and a sandy ridge of glacial Lake Warren. Black River and French Creek course through rich farmlands, once home to Archaic and Woodland Indians. Originally surveyed as Township 7 of Range 17 in the Connecticut Western Reserve, hearty pioneers arrived here in 1815 from the Berkshire Mountains of New England, naming their settlement Sheffield after their Massachusetts town. In the mid-1800s, another wave of immigrants arrived from Bavaria, adding cultural richness to the community. In 1894, industrialist Tom Johnson constructed giant steel mills on the west side of the river, and Sheffield Village eventually broke away, choosing to retain its agrarian identity. Today Sheffield Village is in transition to a modern residential/commercial community but keeps much of its natural character by virtue of parklands along stream valleys. Fortunately, fine examples of homestead architecture have been preserved throughout the village.

A comprehensive ecological study of a Lake Eric estuary and its watershed, including chapters on geology, soils, climatology, hydrolesy, biology, ecology, archaeology, history, and land use. This book serves as a site profile of the only Nation a Estuarine Research Reserve in the Great Lakes Resion. Over 200 color illustrations.

Many exciting discoveries in recent decades have contributed new knowledge to our understanding of the mechanisms that regulate various stages of plant growth and development. Such information, coupled with advances in cell and molecular biology, is fundamental to crop improvement using biotechnological approaches. Two volumes constitute the present work. The ?rst, comprising 22 chapters, commences with introductions relating to gene regulatory models for plant dev- opment and crop improvement, particularly the use of Arabidopsis as a model plant. These chapters are followed by speci?c topics that focus on different developmental aspects associated with vegetative and reproductive phases of the life cycle of a plant. Six chapters discuss vegetative growth and development. Their contents consider topics such as shoot branching, bud dormancy and growth, the devel- ment of roots, nodules and tubers, and senescence. The reproductive phase of plant development is in 14 chapters that present topics such as ?oral organ init- tion and the regulation of ?owering, the development of male and female gametes, pollen germination and tube growth, fertilization, fruit development and ripening, seed development, dormancy, germination, and apomixis. Male sterility and self-incompatibility are also discussed.

Includes book reviews and abstracts.